高中英语——主语从句教案ppt课件.pptx

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1、Subjectclauses主语从句Youareastudent.Smokingisbadforyou.Tofindyourwaycanbeaproblem.Whatshesaidisyetunknown.Thatweshallbelateiscertain.主语从句可以充当主语有哪些？主语是什么？主语从句的特点1.整个句子作主语。2.主语从句的语序是陈述语序。3.主句的谓语动词一般用单数。连接词从属连词ThatWhether连接代词What/WhateverWho/whoeverWhich连接副词WhyWhen/WhereHow从属连词that,Whether1.tha

2、t引导的主语从句只起引导作用，本身没有实际意义，在句中不充当任何成分。Thatwewillbelateiscertain.价格会上涨是肯定的。Thatthepricewillgoupiscertain.2.Whether引导的主语从句有实际意义，但是它与that一样，在主语从句中不充当任何成分。Whetherhewillcomeisn'tclear.他们是否会支持我们还是一个问题。Whethertheywouldsupportuswasaproblem.注意：that和whether引导的主语从句有时为了考虑句子平衡，通常使用形式主语it，而将真正的主语从句移至句末。1.

3、Thathedidn’tcomeisapity.It’sapitythathedidn’tcome.2.ThatheshouldknowaboutthisisimportantItisimportantthatheshouldknowaboutthis.It引导的形式主语3.他们是否会支持我们还是一个问题。Whethertheywillsupportuswasaproblem.Itwasaproblemwhethertheywillsupportus.Correctthesentences1.Theyshouldlikeeachotherisnatural.Thatthe

4、yshouldlikeeachotherisnatural.Itisnatural(that)theyshouldlikeeachother.2.IfMaryheardofhimisreallydoubtful.WhetherMaryheardofhimisreallydoubtful.Itisreallydoubtfulwhether/ifMaryheardofhim.(1)Itis+名词+that从句Itisafactthat…事实是……Itisapitythat…遗憾的是1.事实是他在考试中作弊。Itisafactthathecheatedintheexam.2.她

5、犯这样的错误是令人遗憾的事。Itisapitythatshemadesuchamistake.It引导的形式主语(2)itis+形容词+that从句Itisnaturalthat…很自然……Itisstrangethat…奇怪的是……1.人们欣赏她的天赋是很自然的事情。It’snaturalthatpeopleadmirehertalent.2.奇怪的是他昨天没出现。It'sstrangethathedidn'tshowupyesterday.(3)it+不及物动词+that从句Itseemsthat…似乎……Ithappenedthat…碰巧……1.他似乎就是胜利者。I

6、tseemsthathewillbethewinner.2.碰巧我那天不在。IthappenedthatIwasoutthatday.(4)itis+过去分词+that从句Itisreportedthat…据报道……Itissaidthat…已证实……1.据报导非洲野生动物的数量正在减少。ItisreportedthatthenumberofwildanimalsinAfricaisdecreasing.2.据说今天早上有一起可怕的事故。Itissaidthattherewasaterribleaccidentthismorning.连接代词引导的主语从句不能用形式主语i

7、t，且它们在句中充当句子成分，不能省略1.WhatdoIwanttoknow?It’syoureducationbackground.WhatIwanttoknowisyoureducationbackground.2.他说的话并不重要。Whathesaysisnotimportant.3.Whatheneedsisthatbook.Whatheneedsaresomebooks.注意：What引导的主语从句，可根据表语决定主句动词的单复数。WhatWho/Whatever/whoever1.谁会负责这个位置还没决定好。Who